./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:16:34,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:16:34,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:16:35,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:16:35,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:16:35,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:16:35,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:16:35,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:16:35,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:16:35,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:16:35,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:16:35,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:16:35,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:16:35,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:16:35,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:16:35,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:16:35,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:16:35,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:16:35,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:16:35,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:16:35,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:16:35,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:16:35,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:16:35,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:16:35,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:16:35,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:16:35,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:16:35,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:16:35,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:16:35,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:16:35,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:16:35,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:16:35,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:16:35,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:16:35,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:16:35,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:16:35,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:16:35,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:16:35,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:16:35,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:16:35,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:16:35,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:16:35,108 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:16:35,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:16:35,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:16:35,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:16:35,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:16:35,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:16:35,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:16:35,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:16:35,112 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:16:35,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:16:35,113 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:16:35,113 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:16:35,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:16:35,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:16:35,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:16:35,114 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:16:35,114 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:16:35,115 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:16:35,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:16:35,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:16:35,115 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:16:35,115 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:16:35,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:16:35,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:16:35,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:16:35,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:16:35,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:16:35,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:16:35,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:16:35,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:16:35,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:16:35,117 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:16:35,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:16:35,118 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:16:35,118 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:16:35,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:16:35,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:16:35,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:16:35,432 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:16:35,432 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:16:35,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 01:16:36,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:16:36,860 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:16:36,860 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 01:16:36,866 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f7127b36/c2ea8cb020164cbcafbb6ec9a18f2fd6/FLAG773033675 [2023-08-30 01:16:36,879 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f7127b36/c2ea8cb020164cbcafbb6ec9a18f2fd6 [2023-08-30 01:16:36,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:16:36,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:16:36,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:16:36,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:16:36,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:16:36,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:16:36" (1/1) ... [2023-08-30 01:16:36,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53376591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:36, skipping insertion in model container [2023-08-30 01:16:36,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:16:36" (1/1) ... [2023-08-30 01:16:36,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:16:36,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:16:37,068 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-08-30 01:16:37,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:16:37,082 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:16:37,106 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-08-30 01:16:37,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:16:37,115 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:16:37,115 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:16:37,121 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:16:37,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37 WrapperNode [2023-08-30 01:16:37,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:16:37,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:16:37,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:16:37,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:16:37,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,158 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-08-30 01:16:37,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:16:37,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:16:37,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:16:37,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:16:37,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,177 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:16:37,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:16:37,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:16:37,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:16:37,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (1/1) ... [2023-08-30 01:16:37,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:16:37,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:37,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 01:16:37,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 01:16:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:16:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:16:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:16:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:16:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:16:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 01:16:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:16:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 01:16:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 01:16:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 01:16:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:16:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:16:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 01:16:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:16:37,266 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:16:37,370 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:16:37,372 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:16:37,534 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:16:37,540 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:16:37,540 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 01:16:37,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:16:37 BoogieIcfgContainer [2023-08-30 01:16:37,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:16:37,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:16:37,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:16:37,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:16:37,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:16:36" (1/3) ... [2023-08-30 01:16:37,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bc537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:16:37, skipping insertion in model container [2023-08-30 01:16:37,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:16:37" (2/3) ... [2023-08-30 01:16:37,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bc537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:16:37, skipping insertion in model container [2023-08-30 01:16:37,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:16:37" (3/3) ... [2023-08-30 01:16:37,583 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-08-30 01:16:37,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:16:37,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 01:16:37,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:16:37,728 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 01:16:37,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 93 transitions, 202 flow [2023-08-30 01:16:37,840 INFO L130 PetriNetUnfolder]: 6/91 cut-off events. [2023-08-30 01:16:37,840 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:16:37,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 6/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-30 01:16:37,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 93 transitions, 202 flow [2023-08-30 01:16:37,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 186 flow [2023-08-30 01:16:37,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:16:37,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 87 transitions, 186 flow [2023-08-30 01:16:37,883 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 87 transitions, 186 flow [2023-08-30 01:16:37,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 186 flow [2023-08-30 01:16:37,933 INFO L130 PetriNetUnfolder]: 6/87 cut-off events. [2023-08-30 01:16:37,935 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:16:37,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 6/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-30 01:16:37,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-08-30 01:16:40,474 INFO L134 LiptonReduction]: Checked pairs total: 815 [2023-08-30 01:16:40,474 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-30 01:16:40,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:16:40,492 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56c5bbdd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:16:40,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 01:16:40,494 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 01:16:40,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:16:40,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:40,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 01:16:40,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:40,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash 350, now seen corresponding path program 1 times [2023-08-30 01:16:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:40,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743244741] [2023-08-30 01:16:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:40,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:40,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743244741] [2023-08-30 01:16:40,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743244741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:40,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:40,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 01:16:40,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690668330] [2023-08-30 01:16:40,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:40,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 01:16:40,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 01:16:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 01:16:40,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 177 [2023-08-30 01:16:40,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:40,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 177 [2023-08-30 01:16:40,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:40,670 INFO L130 PetriNetUnfolder]: 88/151 cut-off events. [2023-08-30 01:16:40,671 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 01:16:40,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 151 events. 88/151 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 374 event pairs, 56 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 252. Up to 152 conditions per place. [2023-08-30 01:16:40,673 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-30 01:16:40,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 96 flow [2023-08-30 01:16:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 01:16:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 01:16:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2023-08-30 01:16:40,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2023-08-30 01:16:40,686 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 192 transitions. [2023-08-30 01:16:40,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 192 transitions. [2023-08-30 01:16:40,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:40,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 192 transitions. [2023-08-30 01:16:40,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,696 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,698 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 192 transitions. [2023-08-30 01:16:40,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 96 flow [2023-08-30 01:16:40,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 01:16:40,701 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-30 01:16:40,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-30 01:16:40,707 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 01:16:40,707 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-30 01:16:40,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:40,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:16:40,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 01:16:40,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:40,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash 345860, now seen corresponding path program 1 times [2023-08-30 01:16:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:40,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378080831] [2023-08-30 01:16:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:40,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:40,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378080831] [2023-08-30 01:16:40,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378080831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:40,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:40,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061683742] [2023-08-30 01:16:40,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:40,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:40,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 177 [2023-08-30 01:16:40,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:40,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 177 [2023-08-30 01:16:40,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:40,912 INFO L130 PetriNetUnfolder]: 82/139 cut-off events. [2023-08-30 01:16:40,913 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 01:16:40,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 139 events. 82/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 335 event pairs, 52 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 282. Up to 139 conditions per place. [2023-08-30 01:16:40,914 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 01:16:40,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 80 flow [2023-08-30 01:16:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-30 01:16:40,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632768361581921 [2023-08-30 01:16:40,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-30 01:16:40,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-30 01:16:40,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:40,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-30 01:16:40,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,920 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 246 transitions. [2023-08-30 01:16:40,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 80 flow [2023-08-30 01:16:40,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:16:40,921 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-30 01:16:40,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-30 01:16:40,922 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 01:16:40,923 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-30 01:16:40,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:40,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:40,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:16:40,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 01:16:40,924 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:40,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash 345861, now seen corresponding path program 1 times [2023-08-30 01:16:40,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:40,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056779903] [2023-08-30 01:16:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056779903] [2023-08-30 01:16:41,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056779903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:41,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:41,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216404054] [2023-08-30 01:16:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:41,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:41,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:41,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 177 [2023-08-30 01:16:41,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:41,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 177 [2023-08-30 01:16:41,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:41,112 INFO L130 PetriNetUnfolder]: 76/127 cut-off events. [2023-08-30 01:16:41,112 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 01:16:41,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 127 events. 76/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 298 event pairs, 48 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 259. Up to 127 conditions per place. [2023-08-30 01:16:41,113 INFO L137 encePairwiseOnDemand]: 174/177 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 01:16:41,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-30 01:16:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-08-30 01:16:41,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4821092278719397 [2023-08-30 01:16:41,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-08-30 01:16:41,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-08-30 01:16:41,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:41,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-08-30 01:16:41,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,119 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 256 transitions. [2023-08-30 01:16:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-30 01:16:41,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:41,120 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-08-30 01:16:41,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-08-30 01:16:41,121 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 01:16:41,121 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-08-30 01:16:41,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:41,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:16:41,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 01:16:41,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:41,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:41,123 INFO L85 PathProgramCache]: Analyzing trace with hash 332378011, now seen corresponding path program 1 times [2023-08-30 01:16:41,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:41,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703098794] [2023-08-30 01:16:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:41,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:41,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:41,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703098794] [2023-08-30 01:16:41,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703098794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:41,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:41,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:16:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813960152] [2023-08-30 01:16:41,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:41,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:16:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:16:41,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:16:41,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 01:16:41,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:41,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 01:16:41,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:41,303 INFO L130 PetriNetUnfolder]: 58/100 cut-off events. [2023-08-30 01:16:41,303 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 01:16:41,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 100 events. 58/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 212 event pairs, 36 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 206. Up to 100 conditions per place. [2023-08-30 01:16:41,304 INFO L137 encePairwiseOnDemand]: 175/177 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 01:16:41,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 71 flow [2023-08-30 01:16:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-30 01:16:41,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331450094161959 [2023-08-30 01:16:41,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-30 01:16:41,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-30 01:16:41,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:41,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-30 01:16:41,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,310 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 230 transitions. [2023-08-30 01:16:41,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 71 flow [2023-08-30 01:16:41,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:41,311 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-08-30 01:16:41,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-30 01:16:41,312 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 01:16:41,312 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-08-30 01:16:41,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:41,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:16:41,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 01:16:41,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:41,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash 332378012, now seen corresponding path program 1 times [2023-08-30 01:16:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:41,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283952356] [2023-08-30 01:16:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:41,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:41,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283952356] [2023-08-30 01:16:41,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283952356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:41,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:16:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411560062] [2023-08-30 01:16:41,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:41,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:16:41,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:16:41,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:16:41,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 177 [2023-08-30 01:16:41,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:41,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 177 [2023-08-30 01:16:41,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:41,412 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-08-30 01:16:41,412 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 01:16:41,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 73 events. 40/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 153. Up to 73 conditions per place. [2023-08-30 01:16:41,413 INFO L137 encePairwiseOnDemand]: 175/177 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 01:16:41,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 68 flow [2023-08-30 01:16:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:16:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:16:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 01:16:41,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595103578154426 [2023-08-30 01:16:41,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 01:16:41,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 01:16:41,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:41,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 01:16:41,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,418 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 244 transitions. [2023-08-30 01:16:41,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 68 flow [2023-08-30 01:16:41,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:41,419 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-08-30 01:16:41,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-30 01:16:41,420 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 01:16:41,420 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-08-30 01:16:41,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:41,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:41,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 01:16:41,421 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:41,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:41,422 INFO L85 PathProgramCache]: Analyzing trace with hash -617721443, now seen corresponding path program 1 times [2023-08-30 01:16:41,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:41,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062033432] [2023-08-30 01:16:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:41,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062033432] [2023-08-30 01:16:41,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062033432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:41,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:41,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:41,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803237594] [2023-08-30 01:16:41,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:41,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:16:41,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:41,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:16:41,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:41,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 01:16:41,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:41,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 01:16:41,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:41,917 INFO L130 PetriNetUnfolder]: 46/88 cut-off events. [2023-08-30 01:16:41,918 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 01:16:41,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 88 events. 46/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 1 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 184. Up to 22 conditions per place. [2023-08-30 01:16:41,919 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 29 selfloop transitions, 8 changer transitions 5/42 dead transitions. [2023-08-30 01:16:41,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 183 flow [2023-08-30 01:16:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-08-30 01:16:41,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-08-30 01:16:41,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-08-30 01:16:41,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-08-30 01:16:41,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:41,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-08-30 01:16:41,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,926 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 540 transitions. [2023-08-30 01:16:41,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 183 flow [2023-08-30 01:16:41,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:16:41,928 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 88 flow [2023-08-30 01:16:41,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-30 01:16:41,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-30 01:16:41,929 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 88 flow [2023-08-30 01:16:41,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:41,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:41,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:41,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 01:16:41,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:41,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2123295499, now seen corresponding path program 2 times [2023-08-30 01:16:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:41,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012227933] [2023-08-30 01:16:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:42,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012227933] [2023-08-30 01:16:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012227933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:42,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999233687] [2023-08-30 01:16:42,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:16:42,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:42,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:16:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:42,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 01:16:42,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:42,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 01:16:42,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:42,283 INFO L130 PetriNetUnfolder]: 56/104 cut-off events. [2023-08-30 01:16:42,283 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 01:16:42,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 104 events. 56/104 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 232 event pairs, 5 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 312. Up to 57 conditions per place. [2023-08-30 01:16:42,285 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 27 selfloop transitions, 12 changer transitions 5/44 dead transitions. [2023-08-30 01:16:42,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 250 flow [2023-08-30 01:16:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-08-30 01:16:42,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-08-30 01:16:42,289 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-08-30 01:16:42,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-08-30 01:16:42,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:42,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-08-30 01:16:42,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,294 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,294 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 88 flow. Second operand 7 states and 540 transitions. [2023-08-30 01:16:42,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 250 flow [2023-08-30 01:16:42,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 240 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:42,297 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 162 flow [2023-08-30 01:16:42,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-30 01:16:42,298 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-08-30 01:16:42,298 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 162 flow [2023-08-30 01:16:42,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:42,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:42,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 01:16:42,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:42,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:42,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1122445221, now seen corresponding path program 3 times [2023-08-30 01:16:42,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:42,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757057384] [2023-08-30 01:16:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:42,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:42,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757057384] [2023-08-30 01:16:42,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757057384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:42,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:42,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:42,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472412198] [2023-08-30 01:16:42,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:42,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:16:42,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:42,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:16:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:42,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 01:16:42,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:42,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 01:16:42,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:42,644 INFO L130 PetriNetUnfolder]: 62/114 cut-off events. [2023-08-30 01:16:42,645 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-08-30 01:16:42,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 114 events. 62/114 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 273 event pairs, 5 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 417. Up to 66 conditions per place. [2023-08-30 01:16:42,646 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2023-08-30 01:16:42,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 353 flow [2023-08-30 01:16:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-08-30 01:16:42,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358353510895884 [2023-08-30 01:16:42,650 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-08-30 01:16:42,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-08-30 01:16:42,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:42,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-08-30 01:16:42,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,654 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,655 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 162 flow. Second operand 7 states and 540 transitions. [2023-08-30 01:16:42,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 353 flow [2023-08-30 01:16:42,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 321 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 01:16:42,658 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 228 flow [2023-08-30 01:16:42,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-08-30 01:16:42,659 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-08-30 01:16:42,659 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 228 flow [2023-08-30 01:16:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:42,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:42,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 01:16:42,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:42,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash 203657433, now seen corresponding path program 4 times [2023-08-30 01:16:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:42,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875930819] [2023-08-30 01:16:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:42,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875930819] [2023-08-30 01:16:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875930819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:42,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:42,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:42,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135930704] [2023-08-30 01:16:42,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:42,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:16:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:42,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:16:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:42,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:42,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:42,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:42,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:42,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:43,036 INFO L130 PetriNetUnfolder]: 67/123 cut-off events. [2023-08-30 01:16:43,037 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2023-08-30 01:16:43,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 123 events. 67/123 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 312 event pairs, 5 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 492. Up to 71 conditions per place. [2023-08-30 01:16:43,038 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 33 selfloop transitions, 15 changer transitions 5/53 dead transitions. [2023-08-30 01:16:43,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 410 flow [2023-08-30 01:16:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-08-30 01:16:43,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4430992736077482 [2023-08-30 01:16:43,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-08-30 01:16:43,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-08-30 01:16:43,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:43,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-08-30 01:16:43,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,045 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 228 flow. Second operand 7 states and 549 transitions. [2023-08-30 01:16:43,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 410 flow [2023-08-30 01:16:43,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 370 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 01:16:43,049 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 236 flow [2023-08-30 01:16:43,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-30 01:16:43,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-08-30 01:16:43,050 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 236 flow [2023-08-30 01:16:43,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:43,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:43,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 01:16:43,051 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:43,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2099222449, now seen corresponding path program 5 times [2023-08-30 01:16:43,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:43,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719830013] [2023-08-30 01:16:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719830013] [2023-08-30 01:16:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719830013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:43,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:43,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:43,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637605990] [2023-08-30 01:16:43,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:43,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:16:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:16:43,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:43,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 01:16:43,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:43,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 01:16:43,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:43,420 INFO L130 PetriNetUnfolder]: 66/124 cut-off events. [2023-08-30 01:16:43,421 INFO L131 PetriNetUnfolder]: For 330/330 co-relation queries the response was YES. [2023-08-30 01:16:43,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 124 events. 66/124 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 309 event pairs, 7 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 510. Up to 76 conditions per place. [2023-08-30 01:16:43,422 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 15 changer transitions 5/50 dead transitions. [2023-08-30 01:16:43,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 401 flow [2023-08-30 01:16:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-08-30 01:16:43,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43422114608555284 [2023-08-30 01:16:43,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-08-30 01:16:43,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-08-30 01:16:43,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:43,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-08-30 01:16:43,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,432 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 236 flow. Second operand 7 states and 538 transitions. [2023-08-30 01:16:43,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 401 flow [2023-08-30 01:16:43,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 361 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 01:16:43,436 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 242 flow [2023-08-30 01:16:43,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-30 01:16:43,438 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-08-30 01:16:43,438 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 242 flow [2023-08-30 01:16:43,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:43,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:43,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 01:16:43,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:43,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:43,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1171992613, now seen corresponding path program 6 times [2023-08-30 01:16:43,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:43,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699254206] [2023-08-30 01:16:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:43,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699254206] [2023-08-30 01:16:43,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699254206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:43,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:43,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503174442] [2023-08-30 01:16:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:43,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:16:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:16:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:43,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 177 [2023-08-30 01:16:43,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:43,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 177 [2023-08-30 01:16:43,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:43,726 INFO L130 PetriNetUnfolder]: 67/127 cut-off events. [2023-08-30 01:16:43,726 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2023-08-30 01:16:43,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 127 events. 67/127 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 9 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 516. Up to 59 conditions per place. [2023-08-30 01:16:43,727 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 32 selfloop transitions, 14 changer transitions 5/51 dead transitions. [2023-08-30 01:16:43,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 417 flow [2023-08-30 01:16:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 534 transitions. [2023-08-30 01:16:43,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43099273607748184 [2023-08-30 01:16:43,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 534 transitions. [2023-08-30 01:16:43,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 534 transitions. [2023-08-30 01:16:43,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:43,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 534 transitions. [2023-08-30 01:16:43,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,734 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 242 flow. Second operand 7 states and 534 transitions. [2023-08-30 01:16:43,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 417 flow [2023-08-30 01:16:43,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 379 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 01:16:43,736 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 248 flow [2023-08-30 01:16:43,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-30 01:16:43,737 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-08-30 01:16:43,737 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 248 flow [2023-08-30 01:16:43,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:43,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:43,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 01:16:43,738 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:43,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash -451984460, now seen corresponding path program 1 times [2023-08-30 01:16:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:43,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400102264] [2023-08-30 01:16:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:43,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:43,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400102264] [2023-08-30 01:16:43,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400102264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:43,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:43,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:43,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965011103] [2023-08-30 01:16:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:43,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:43,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:43,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:43,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:43,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:43,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:43,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:43,896 INFO L130 PetriNetUnfolder]: 104/195 cut-off events. [2023-08-30 01:16:43,897 INFO L131 PetriNetUnfolder]: For 610/610 co-relation queries the response was YES. [2023-08-30 01:16:43,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 195 events. 104/195 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 625 event pairs, 16 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 809. Up to 78 conditions per place. [2023-08-30 01:16:43,899 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 46 selfloop transitions, 22 changer transitions 4/72 dead transitions. [2023-08-30 01:16:43,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 590 flow [2023-08-30 01:16:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-08-30 01:16:43,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390637610976597 [2023-08-30 01:16:43,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-08-30 01:16:43,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-08-30 01:16:43,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:43,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-08-30 01:16:43,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,905 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,905 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 248 flow. Second operand 7 states and 550 transitions. [2023-08-30 01:16:43,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 590 flow [2023-08-30 01:16:43,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 522 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 01:16:43,908 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 366 flow [2023-08-30 01:16:43,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-30 01:16:43,909 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2023-08-30 01:16:43,909 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 366 flow [2023-08-30 01:16:43,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:43,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:43,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 01:16:43,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:43,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2016617798, now seen corresponding path program 2 times [2023-08-30 01:16:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:43,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414054105] [2023-08-30 01:16:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:43,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:43,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414054105] [2023-08-30 01:16:43,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414054105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:43,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:43,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:43,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743816233] [2023-08-30 01:16:43,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:43,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:43,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:43,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:43,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:43,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:43,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:43,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:43,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:43,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:44,103 INFO L130 PetriNetUnfolder]: 108/211 cut-off events. [2023-08-30 01:16:44,103 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-08-30 01:16:44,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 211 events. 108/211 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 711 event pairs, 16 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 975. Up to 80 conditions per place. [2023-08-30 01:16:44,105 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 58 selfloop transitions, 25 changer transitions 1/84 dead transitions. [2023-08-30 01:16:44,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 743 flow [2023-08-30 01:16:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:16:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:16:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2023-08-30 01:16:44,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484463276836158 [2023-08-30 01:16:44,107 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2023-08-30 01:16:44,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2023-08-30 01:16:44,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:44,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2023-08-30 01:16:44,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,111 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,111 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 366 flow. Second operand 8 states and 635 transitions. [2023-08-30 01:16:44,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 743 flow [2023-08-30 01:16:44,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 701 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:44,117 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 489 flow [2023-08-30 01:16:44,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-30 01:16:44,117 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-30 01:16:44,117 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 489 flow [2023-08-30 01:16:44,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:44,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 01:16:44,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:44,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1331678969, now seen corresponding path program 1 times [2023-08-30 01:16:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:44,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300642752] [2023-08-30 01:16:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:44,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:44,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:44,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300642752] [2023-08-30 01:16:44,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300642752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:44,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:44,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:44,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083815461] [2023-08-30 01:16:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:44,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:44,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:44,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:44,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 489 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:44,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:44,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:44,270 INFO L130 PetriNetUnfolder]: 123/246 cut-off events. [2023-08-30 01:16:44,270 INFO L131 PetriNetUnfolder]: For 1488/1488 co-relation queries the response was YES. [2023-08-30 01:16:44,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 246 events. 123/246 cut-off events. For 1488/1488 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 910 event pairs, 8 based on Foata normal form. 6/252 useless extension candidates. Maximal degree in co-relation 1229. Up to 77 conditions per place. [2023-08-30 01:16:44,272 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 51 selfloop transitions, 20 changer transitions 2/73 dead transitions. [2023-08-30 01:16:44,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 776 flow [2023-08-30 01:16:44,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 01:16:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 01:16:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 473 transitions. [2023-08-30 01:16:44,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453860640301318 [2023-08-30 01:16:44,274 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 473 transitions. [2023-08-30 01:16:44,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 473 transitions. [2023-08-30 01:16:44,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:44,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 473 transitions. [2023-08-30 01:16:44,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,278 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,278 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 489 flow. Second operand 6 states and 473 transitions. [2023-08-30 01:16:44,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 776 flow [2023-08-30 01:16:44,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 727 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:44,285 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 547 flow [2023-08-30 01:16:44,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2023-08-30 01:16:44,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2023-08-30 01:16:44,286 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 547 flow [2023-08-30 01:16:44,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:44,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:44,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 01:16:44,287 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:44,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:44,287 INFO L85 PathProgramCache]: Analyzing trace with hash 413181075, now seen corresponding path program 2 times [2023-08-30 01:16:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625007800] [2023-08-30 01:16:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:44,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625007800] [2023-08-30 01:16:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625007800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061546670] [2023-08-30 01:16:44,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:16:44,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:44,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:44,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:44,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 01:16:44,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:16:44,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:44,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:16:44,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:44,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:44,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061546670] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:44,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:16:44,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-08-30 01:16:44,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680640677] [2023-08-30 01:16:44,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:44,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:44,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:44,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:44,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:44,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:44,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:44,671 INFO L130 PetriNetUnfolder]: 124/249 cut-off events. [2023-08-30 01:16:44,671 INFO L131 PetriNetUnfolder]: For 1929/1929 co-relation queries the response was YES. [2023-08-30 01:16:44,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 249 events. 124/249 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 922 event pairs, 6 based on Foata normal form. 6/255 useless extension candidates. Maximal degree in co-relation 1307. Up to 134 conditions per place. [2023-08-30 01:16:44,674 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 48 selfloop transitions, 23 changer transitions 0/71 dead transitions. [2023-08-30 01:16:44,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 778 flow [2023-08-30 01:16:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:16:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:16:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-30 01:16:44,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519774011299435 [2023-08-30 01:16:44,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-30 01:16:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-30 01:16:44,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:44,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-30 01:16:44,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,680 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 547 flow. Second operand 5 states and 400 transitions. [2023-08-30 01:16:44,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 778 flow [2023-08-30 01:16:44,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 723 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-30 01:16:44,688 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 598 flow [2023-08-30 01:16:44,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-30 01:16:44,689 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-08-30 01:16:44,689 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 598 flow [2023-08-30 01:16:44,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:44,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:44,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 01:16:44,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 01:16:44,897 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:44,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:44,897 INFO L85 PathProgramCache]: Analyzing trace with hash 964639928, now seen corresponding path program 3 times [2023-08-30 01:16:44,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:44,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174806038] [2023-08-30 01:16:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174806038] [2023-08-30 01:16:44,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174806038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:44,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:44,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207060341] [2023-08-30 01:16:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:44,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:44,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 598 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:44,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:44,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:44,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:45,052 INFO L130 PetriNetUnfolder]: 118/233 cut-off events. [2023-08-30 01:16:45,052 INFO L131 PetriNetUnfolder]: For 2148/2148 co-relation queries the response was YES. [2023-08-30 01:16:45,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 233 events. 118/233 cut-off events. For 2148/2148 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 811 event pairs, 30 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 1308. Up to 154 conditions per place. [2023-08-30 01:16:45,055 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2023-08-30 01:16:45,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 787 flow [2023-08-30 01:16:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:16:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:16:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-08-30 01:16:45,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463276836158192 [2023-08-30 01:16:45,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-08-30 01:16:45,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-08-30 01:16:45,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:45,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-08-30 01:16:45,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,061 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,061 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 598 flow. Second operand 5 states and 395 transitions. [2023-08-30 01:16:45,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 787 flow [2023-08-30 01:16:45,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 758 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:45,070 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 590 flow [2023-08-30 01:16:45,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-08-30 01:16:45,071 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-08-30 01:16:45,071 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 590 flow [2023-08-30 01:16:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:45,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:45,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 01:16:45,072 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:45,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1290296755, now seen corresponding path program 3 times [2023-08-30 01:16:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:45,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3154976] [2023-08-30 01:16:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:45,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:45,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:45,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3154976] [2023-08-30 01:16:45,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3154976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:45,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:45,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:45,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562700156] [2023-08-30 01:16:45,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:45,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:45,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:45,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:45,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:45,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:45,251 INFO L130 PetriNetUnfolder]: 146/289 cut-off events. [2023-08-30 01:16:45,251 INFO L131 PetriNetUnfolder]: For 2297/2297 co-relation queries the response was YES. [2023-08-30 01:16:45,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 289 events. 146/289 cut-off events. For 2297/2297 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1117 event pairs, 36 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 1622. Up to 212 conditions per place. [2023-08-30 01:16:45,254 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 61 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2023-08-30 01:16:45,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 1000 flow [2023-08-30 01:16:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:16:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:16:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2023-08-30 01:16:45,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45084745762711864 [2023-08-30 01:16:45,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2023-08-30 01:16:45,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2023-08-30 01:16:45,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:45,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2023-08-30 01:16:45,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,259 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,259 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 590 flow. Second operand 5 states and 399 transitions. [2023-08-30 01:16:45,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 1000 flow [2023-08-30 01:16:45,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 970 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:45,267 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 774 flow [2023-08-30 01:16:45,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-08-30 01:16:45,268 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2023-08-30 01:16:45,268 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 774 flow [2023-08-30 01:16:45,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:45,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:45,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 01:16:45,269 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:45,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1878015302, now seen corresponding path program 4 times [2023-08-30 01:16:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:45,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665040612] [2023-08-30 01:16:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665040612] [2023-08-30 01:16:45,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665040612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:45,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326417028] [2023-08-30 01:16:45,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:16:45,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:45,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:45,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:45,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 01:16:45,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:16:45,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:45,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:16:45,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:45,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326417028] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:16:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-08-30 01:16:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416985148] [2023-08-30 01:16:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:45,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:16:45,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:45,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:45,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:45,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:45,604 INFO L130 PetriNetUnfolder]: 136/269 cut-off events. [2023-08-30 01:16:45,604 INFO L131 PetriNetUnfolder]: For 2224/2224 co-relation queries the response was YES. [2023-08-30 01:16:45,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 269 events. 136/269 cut-off events. For 2224/2224 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1002 event pairs, 8 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 1612. Up to 140 conditions per place. [2023-08-30 01:16:45,607 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 54 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-08-30 01:16:45,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 79 transitions, 980 flow [2023-08-30 01:16:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:16:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:16:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-30 01:16:45,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519774011299435 [2023-08-30 01:16:45,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-30 01:16:45,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-30 01:16:45,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:45,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-30 01:16:45,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,612 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 774 flow. Second operand 5 states and 400 transitions. [2023-08-30 01:16:45,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 79 transitions, 980 flow [2023-08-30 01:16:45,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 951 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 01:16:45,623 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 778 flow [2023-08-30 01:16:45,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=778, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2023-08-30 01:16:45,624 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-08-30 01:16:45,624 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 778 flow [2023-08-30 01:16:45,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:45,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:45,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:45,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 01:16:45,834 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:45,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2024669737, now seen corresponding path program 4 times [2023-08-30 01:16:45,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:45,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481622527] [2023-08-30 01:16:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481622527] [2023-08-30 01:16:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481622527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:45,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:45,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:45,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151580408] [2023-08-30 01:16:45,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:45,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:45,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:45,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:45,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:45,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:45,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:46,042 INFO L130 PetriNetUnfolder]: 134/267 cut-off events. [2023-08-30 01:16:46,042 INFO L131 PetriNetUnfolder]: For 2291/2291 co-relation queries the response was YES. [2023-08-30 01:16:46,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 267 events. 134/267 cut-off events. For 2291/2291 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1010 event pairs, 20 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 1624. Up to 92 conditions per place. [2023-08-30 01:16:46,045 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 58 selfloop transitions, 29 changer transitions 1/88 dead transitions. [2023-08-30 01:16:46,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 1113 flow [2023-08-30 01:16:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:16:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:16:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2023-08-30 01:16:46,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442090395480226 [2023-08-30 01:16:46,048 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 626 transitions. [2023-08-30 01:16:46,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 626 transitions. [2023-08-30 01:16:46,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:46,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 626 transitions. [2023-08-30 01:16:46,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.25) internal successors, (626), 8 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,052 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,052 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 778 flow. Second operand 8 states and 626 transitions. [2023-08-30 01:16:46,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 1113 flow [2023-08-30 01:16:46,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 1078 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 01:16:46,062 INFO L231 Difference]: Finished difference. Result has 89 places, 65 transitions, 848 flow [2023-08-30 01:16:46,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2023-08-30 01:16:46,062 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-08-30 01:16:46,063 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 848 flow [2023-08-30 01:16:46,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:46,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:46,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 01:16:46,063 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:46,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1299496320, now seen corresponding path program 5 times [2023-08-30 01:16:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:46,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358879318] [2023-08-30 01:16:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:46,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:46,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358879318] [2023-08-30 01:16:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358879318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:46,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:46,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:46,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382881024] [2023-08-30 01:16:46,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:46,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:46,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:46,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:46,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 848 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:46,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:46,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:46,239 INFO L130 PetriNetUnfolder]: 119/240 cut-off events. [2023-08-30 01:16:46,239 INFO L131 PetriNetUnfolder]: For 2250/2250 co-relation queries the response was YES. [2023-08-30 01:16:46,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 240 events. 119/240 cut-off events. For 2250/2250 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 863 event pairs, 8 based on Foata normal form. 8/248 useless extension candidates. Maximal degree in co-relation 1504. Up to 106 conditions per place. [2023-08-30 01:16:46,242 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 56 selfloop transitions, 20 changer transitions 2/78 dead transitions. [2023-08-30 01:16:46,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 78 transitions, 1045 flow [2023-08-30 01:16:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 01:16:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 01:16:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-30 01:16:46,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 01:16:46,244 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-30 01:16:46,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-30 01:16:46,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:46,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-30 01:16:46,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,248 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,248 INFO L175 Difference]: Start difference. First operand has 89 places, 65 transitions, 848 flow. Second operand 6 states and 472 transitions. [2023-08-30 01:16:46,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 78 transitions, 1045 flow [2023-08-30 01:16:46,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 78 transitions, 992 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 01:16:46,257 INFO L231 Difference]: Finished difference. Result has 89 places, 60 transitions, 752 flow [2023-08-30 01:16:46,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=89, PETRI_TRANSITIONS=60} [2023-08-30 01:16:46,258 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-08-30 01:16:46,258 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 60 transitions, 752 flow [2023-08-30 01:16:46,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:46,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 01:16:46,259 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:46,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2098405841, now seen corresponding path program 5 times [2023-08-30 01:16:46,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:46,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42411487] [2023-08-30 01:16:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:46,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:46,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42411487] [2023-08-30 01:16:46,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42411487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:16:46,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:16:46,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:16:46,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237034150] [2023-08-30 01:16:46,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:16:46,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:16:46,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:16:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:16:46,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-30 01:16:46,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 60 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:46,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-30 01:16:46,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:46,421 INFO L130 PetriNetUnfolder]: 113/218 cut-off events. [2023-08-30 01:16:46,422 INFO L131 PetriNetUnfolder]: For 2129/2129 co-relation queries the response was YES. [2023-08-30 01:16:46,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 218 events. 113/218 cut-off events. For 2129/2129 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 716 event pairs, 22 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 1378. Up to 92 conditions per place. [2023-08-30 01:16:46,424 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 44 selfloop transitions, 21 changer transitions 4/69 dead transitions. [2023-08-30 01:16:46,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 69 transitions, 925 flow [2023-08-30 01:16:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:16:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:16:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2023-08-30 01:16:46,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350282485875706 [2023-08-30 01:16:46,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2023-08-30 01:16:46,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2023-08-30 01:16:46,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:46,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2023-08-30 01:16:46,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,429 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,429 INFO L175 Difference]: Start difference. First operand has 89 places, 60 transitions, 752 flow. Second operand 7 states and 539 transitions. [2023-08-30 01:16:46,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 69 transitions, 925 flow [2023-08-30 01:16:46,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 69 transitions, 867 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 01:16:46,436 INFO L231 Difference]: Finished difference. Result has 89 places, 57 transitions, 712 flow [2023-08-30 01:16:46,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2023-08-30 01:16:46,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-08-30 01:16:46,437 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 712 flow [2023-08-30 01:16:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:46,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:46,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:46,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 01:16:46,438 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:46,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1342111166, now seen corresponding path program 1 times [2023-08-30 01:16:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471180812] [2023-08-30 01:16:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471180812] [2023-08-30 01:16:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471180812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685457624] [2023-08-30 01:16:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:46,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:46,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:46,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:46,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 01:16:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:46,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:46,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:46,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685457624] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:47,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:47,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 01:16:47,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081481034] [2023-08-30 01:16:47,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:47,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 01:16:47,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:47,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 01:16:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-30 01:16:47,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:47,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 712 flow. Second operand has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:47,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:47,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:47,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:47,589 INFO L130 PetriNetUnfolder]: 116/218 cut-off events. [2023-08-30 01:16:47,589 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2023-08-30 01:16:47,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 218 events. 116/218 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 706 event pairs, 2 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1396. Up to 53 conditions per place. [2023-08-30 01:16:47,592 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 41 selfloop transitions, 21 changer transitions 26/88 dead transitions. [2023-08-30 01:16:47,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 1065 flow [2023-08-30 01:16:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 01:16:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 01:16:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 818 transitions. [2023-08-30 01:16:47,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42013353877760656 [2023-08-30 01:16:47,594 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 818 transitions. [2023-08-30 01:16:47,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 818 transitions. [2023-08-30 01:16:47,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:47,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 818 transitions. [2023-08-30 01:16:47,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.36363636363636) internal successors, (818), 11 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:47,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:47,599 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:47,599 INFO L175 Difference]: Start difference. First operand has 89 places, 57 transitions, 712 flow. Second operand 11 states and 818 transitions. [2023-08-30 01:16:47,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 1065 flow [2023-08-30 01:16:47,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 1013 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 01:16:47,607 INFO L231 Difference]: Finished difference. Result has 95 places, 46 transitions, 574 flow [2023-08-30 01:16:47,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=574, PETRI_PLACES=95, PETRI_TRANSITIONS=46} [2023-08-30 01:16:47,608 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2023-08-30 01:16:47,608 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 46 transitions, 574 flow [2023-08-30 01:16:47,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:47,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:47,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:47,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:47,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:47,815 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:47,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:47,815 INFO L85 PathProgramCache]: Analyzing trace with hash 909970288, now seen corresponding path program 2 times [2023-08-30 01:16:47,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:47,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178310220] [2023-08-30 01:16:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:47,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178310220] [2023-08-30 01:16:47,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178310220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35189652] [2023-08-30 01:16:47,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:16:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:47,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:47,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 01:16:48,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:16:48,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:48,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:48,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:48,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:48,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35189652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:48,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:48,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 01:16:48,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60657451] [2023-08-30 01:16:48,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:48,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 01:16:48,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 01:16:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-30 01:16:48,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:48,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 46 transitions, 574 flow. Second operand has 18 states, 18 states have (on average 70.66666666666667) internal successors, (1272), 18 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:48,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:48,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:48,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:48,909 INFO L130 PetriNetUnfolder]: 90/178 cut-off events. [2023-08-30 01:16:48,909 INFO L131 PetriNetUnfolder]: For 1629/1629 co-relation queries the response was YES. [2023-08-30 01:16:48,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 178 events. 90/178 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 2 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 1119. Up to 55 conditions per place. [2023-08-30 01:16:48,912 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 45 selfloop transitions, 26 changer transitions 9/80 dead transitions. [2023-08-30 01:16:48,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 80 transitions, 961 flow [2023-08-30 01:16:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 01:16:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 01:16:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 817 transitions. [2023-08-30 01:16:48,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196199280945044 [2023-08-30 01:16:48,914 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 817 transitions. [2023-08-30 01:16:48,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 817 transitions. [2023-08-30 01:16:48,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:48,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 817 transitions. [2023-08-30 01:16:48,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.27272727272727) internal successors, (817), 11 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:48,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:48,919 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:48,919 INFO L175 Difference]: Start difference. First operand has 95 places, 46 transitions, 574 flow. Second operand 11 states and 817 transitions. [2023-08-30 01:16:48,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 80 transitions, 961 flow [2023-08-30 01:16:48,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 838 flow, removed 17 selfloop flow, removed 13 redundant places. [2023-08-30 01:16:48,926 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 588 flow [2023-08-30 01:16:48,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2023-08-30 01:16:48,927 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2023-08-30 01:16:48,927 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 588 flow [2023-08-30 01:16:48,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.66666666666667) internal successors, (1272), 18 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:48,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:48,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:48,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:49,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:49,139 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:49,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash 934043338, now seen corresponding path program 3 times [2023-08-30 01:16:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:49,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845314046] [2023-08-30 01:16:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:49,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845314046] [2023-08-30 01:16:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845314046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429915388] [2023-08-30 01:16:49,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 01:16:49,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:49,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:49,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:49,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 01:16:49,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 01:16:49,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:49,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:49,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:49,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:49,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429915388] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:49,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:49,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 01:16:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392273714] [2023-08-30 01:16:49,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 01:16:49,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 01:16:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-30 01:16:49,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:49,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 588 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:49,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:49,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:49,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:50,084 INFO L130 PetriNetUnfolder]: 84/173 cut-off events. [2023-08-30 01:16:50,084 INFO L131 PetriNetUnfolder]: For 1193/1193 co-relation queries the response was YES. [2023-08-30 01:16:50,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 173 events. 84/173 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 533 event pairs, 2 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 1034. Up to 55 conditions per place. [2023-08-30 01:16:50,086 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 33 selfloop transitions, 15 changer transitions 26/74 dead transitions. [2023-08-30 01:16:50,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 74 transitions, 865 flow [2023-08-30 01:16:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 01:16:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 01:16:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 811 transitions. [2023-08-30 01:16:50,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165382639958911 [2023-08-30 01:16:50,088 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 811 transitions. [2023-08-30 01:16:50,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 811 transitions. [2023-08-30 01:16:50,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:50,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 811 transitions. [2023-08-30 01:16:50,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.72727272727273) internal successors, (811), 11 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:50,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:50,105 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:50,105 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 588 flow. Second operand 11 states and 811 transitions. [2023-08-30 01:16:50,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 74 transitions, 865 flow [2023-08-30 01:16:50,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 790 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-08-30 01:16:50,111 INFO L231 Difference]: Finished difference. Result has 84 places, 37 transitions, 391 flow [2023-08-30 01:16:50,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=391, PETRI_PLACES=84, PETRI_TRANSITIONS=37} [2023-08-30 01:16:50,112 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2023-08-30 01:16:50,113 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 37 transitions, 391 flow [2023-08-30 01:16:50,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:50,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:50,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:50,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:50,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 01:16:50,321 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:50,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1793870986, now seen corresponding path program 4 times [2023-08-30 01:16:50,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:50,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699163657] [2023-08-30 01:16:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699163657] [2023-08-30 01:16:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699163657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86814823] [2023-08-30 01:16:50,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:16:50,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:50,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:50,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:50,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 01:16:50,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:16:50,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:50,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:50,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:50,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86814823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:50,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:50,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 01:16:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818692341] [2023-08-30 01:16:50,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 01:16:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 01:16:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-30 01:16:50,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:50,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 37 transitions, 391 flow. Second operand has 16 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:50,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:50,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:50,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:51,486 INFO L130 PetriNetUnfolder]: 75/169 cut-off events. [2023-08-30 01:16:51,487 INFO L131 PetriNetUnfolder]: For 1013/1013 co-relation queries the response was YES. [2023-08-30 01:16:51,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 169 events. 75/169 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 550 event pairs, 1 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 934. Up to 39 conditions per place. [2023-08-30 01:16:51,488 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 37 selfloop transitions, 27 changer transitions 18/82 dead transitions. [2023-08-30 01:16:51,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 881 flow [2023-08-30 01:16:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 01:16:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 01:16:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1246 transitions. [2023-08-30 01:16:51,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140910601528747 [2023-08-30 01:16:51,491 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1246 transitions. [2023-08-30 01:16:51,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1246 transitions. [2023-08-30 01:16:51,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:51,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1246 transitions. [2023-08-30 01:16:51,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.29411764705883) internal successors, (1246), 17 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 177.0) internal successors, (3186), 18 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,497 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 177.0) internal successors, (3186), 18 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,497 INFO L175 Difference]: Start difference. First operand has 84 places, 37 transitions, 391 flow. Second operand 17 states and 1246 transitions. [2023-08-30 01:16:51,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 881 flow [2023-08-30 01:16:51,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 771 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-08-30 01:16:51,502 INFO L231 Difference]: Finished difference. Result has 86 places, 46 transitions, 512 flow [2023-08-30 01:16:51,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=46} [2023-08-30 01:16:51,503 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2023-08-30 01:16:51,503 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 46 transitions, 512 flow [2023-08-30 01:16:51,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:51,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:51,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:51,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:51,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:51,709 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:51,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1817944036, now seen corresponding path program 5 times [2023-08-30 01:16:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647594704] [2023-08-30 01:16:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647594704] [2023-08-30 01:16:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647594704] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130838309] [2023-08-30 01:16:51,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 01:16:51,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:51,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:51,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:51,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 01:16:51,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 01:16:51,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:51,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 01:16:51,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:51,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:52,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130838309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:52,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:52,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-08-30 01:16:52,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614803552] [2023-08-30 01:16:52,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:52,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 01:16:52,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:52,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 01:16:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-08-30 01:16:52,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:52,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 46 transitions, 512 flow. Second operand has 15 states, 15 states have (on average 70.93333333333334) internal successors, (1064), 15 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:52,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:52,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:52,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:52,530 INFO L130 PetriNetUnfolder]: 67/145 cut-off events. [2023-08-30 01:16:52,531 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2023-08-30 01:16:52,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 145 events. 67/145 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 448 event pairs, 1 based on Foata normal form. 5/150 useless extension candidates. Maximal degree in co-relation 847. Up to 50 conditions per place. [2023-08-30 01:16:52,532 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 32 selfloop transitions, 20 changer transitions 20/72 dead transitions. [2023-08-30 01:16:52,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 72 transitions, 784 flow [2023-08-30 01:16:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:16:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:16:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1024 transitions. [2023-08-30 01:16:52,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132364810330912 [2023-08-30 01:16:52,535 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1024 transitions. [2023-08-30 01:16:52,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1024 transitions. [2023-08-30 01:16:52,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:52,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1024 transitions. [2023-08-30 01:16:52,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.14285714285714) internal successors, (1024), 14 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:52,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:52,539 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:52,540 INFO L175 Difference]: Start difference. First operand has 86 places, 46 transitions, 512 flow. Second operand 14 states and 1024 transitions. [2023-08-30 01:16:52,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 72 transitions, 784 flow [2023-08-30 01:16:52,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 72 transitions, 658 flow, removed 31 selfloop flow, removed 11 redundant places. [2023-08-30 01:16:52,545 INFO L231 Difference]: Finished difference. Result has 86 places, 40 transitions, 371 flow [2023-08-30 01:16:52,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=371, PETRI_PLACES=86, PETRI_TRANSITIONS=40} [2023-08-30 01:16:52,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2023-08-30 01:16:52,545 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 40 transitions, 371 flow [2023-08-30 01:16:52,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.93333333333334) internal successors, (1064), 15 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:52,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:52,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:52,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:52,757 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:52,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 783941896, now seen corresponding path program 6 times [2023-08-30 01:16:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:52,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831292969] [2023-08-30 01:16:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:52,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831292969] [2023-08-30 01:16:52,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831292969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220693389] [2023-08-30 01:16:52,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 01:16:52,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:52,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:52,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:52,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 01:16:52,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 01:16:52,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:52,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:52,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:53,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220693389] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:53,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-30 01:16:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504580595] [2023-08-30 01:16:53,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:53,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 01:16:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 01:16:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-08-30 01:16:53,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:53,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 40 transitions, 371 flow. Second operand has 15 states, 15 states have (on average 70.53333333333333) internal successors, (1058), 15 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:53,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:53,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:53,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:53,708 INFO L130 PetriNetUnfolder]: 57/125 cut-off events. [2023-08-30 01:16:53,708 INFO L131 PetriNetUnfolder]: For 585/585 co-relation queries the response was YES. [2023-08-30 01:16:53,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 125 events. 57/125 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 344 event pairs, 1 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 681. Up to 29 conditions per place. [2023-08-30 01:16:53,709 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 30 selfloop transitions, 23 changer transitions 11/64 dead transitions. [2023-08-30 01:16:53,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 64 transitions, 631 flow [2023-08-30 01:16:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:16:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:16:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1018 transitions. [2023-08-30 01:16:53,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081517352703795 [2023-08-30 01:16:53,712 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1018 transitions. [2023-08-30 01:16:53,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1018 transitions. [2023-08-30 01:16:53,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:53,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1018 transitions. [2023-08-30 01:16:53,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.71428571428571) internal successors, (1018), 14 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:53,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:53,717 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:53,717 INFO L175 Difference]: Start difference. First operand has 86 places, 40 transitions, 371 flow. Second operand 14 states and 1018 transitions. [2023-08-30 01:16:53,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 64 transitions, 631 flow [2023-08-30 01:16:53,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 562 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-08-30 01:16:53,721 INFO L231 Difference]: Finished difference. Result has 81 places, 40 transitions, 373 flow [2023-08-30 01:16:53,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=373, PETRI_PLACES=81, PETRI_TRANSITIONS=40} [2023-08-30 01:16:53,722 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2023-08-30 01:16:53,722 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 40 transitions, 373 flow [2023-08-30 01:16:53,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.53333333333333) internal successors, (1058), 15 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:53,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:53,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:53,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:53,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 01:16:53,929 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:53,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash -711625490, now seen corresponding path program 7 times [2023-08-30 01:16:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:53,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003662025] [2023-08-30 01:16:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:54,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003662025] [2023-08-30 01:16:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003662025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382945065] [2023-08-30 01:16:54,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 01:16:54,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:54,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:54,064 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:54,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 01:16:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:54,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:54,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:54,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:54,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382945065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:54,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 01:16:54,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065686987] [2023-08-30 01:16:54,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 01:16:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 01:16:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-08-30 01:16:54,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:54,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 40 transitions, 373 flow. Second operand has 18 states, 18 states have (on average 70.5) internal successors, (1269), 18 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:54,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:54,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:54,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:54,850 INFO L130 PetriNetUnfolder]: 59/131 cut-off events. [2023-08-30 01:16:54,850 INFO L131 PetriNetUnfolder]: For 565/565 co-relation queries the response was YES. [2023-08-30 01:16:54,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 131 events. 59/131 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 373 event pairs, 3 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 705. Up to 34 conditions per place. [2023-08-30 01:16:54,851 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 31 selfloop transitions, 15 changer transitions 13/59 dead transitions. [2023-08-30 01:16:54,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 59 transitions, 624 flow [2023-08-30 01:16:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 01:16:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 01:16:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2023-08-30 01:16:54,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41129943502824856 [2023-08-30 01:16:54,853 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 728 transitions. [2023-08-30 01:16:54,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 728 transitions. [2023-08-30 01:16:54,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:54,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 728 transitions. [2023-08-30 01:16:54,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.8) internal successors, (728), 10 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:54,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:54,858 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:54,858 INFO L175 Difference]: Start difference. First operand has 81 places, 40 transitions, 373 flow. Second operand 10 states and 728 transitions. [2023-08-30 01:16:54,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 59 transitions, 624 flow [2023-08-30 01:16:54,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 59 transitions, 562 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-08-30 01:16:54,862 INFO L231 Difference]: Finished difference. Result has 83 places, 39 transitions, 361 flow [2023-08-30 01:16:54,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=83, PETRI_TRANSITIONS=39} [2023-08-30 01:16:54,865 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-08-30 01:16:54,866 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 39 transitions, 361 flow [2023-08-30 01:16:54,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.5) internal successors, (1269), 18 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:54,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:54,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:54,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:55,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 01:16:55,072 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:55,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1222071540, now seen corresponding path program 8 times [2023-08-30 01:16:55,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888728353] [2023-08-30 01:16:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:55,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:55,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888728353] [2023-08-30 01:16:55,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888728353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:55,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502041666] [2023-08-30 01:16:55,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:16:55,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:55,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:55,213 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:55,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 01:16:55,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:16:55,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:55,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:55,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:55,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:55,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502041666] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:55,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:55,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 01:16:55,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682559162] [2023-08-30 01:16:55,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:55,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 01:16:55,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:55,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 01:16:55,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-30 01:16:55,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:55,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 39 transitions, 361 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:55,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:55,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:55,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:55,976 INFO L130 PetriNetUnfolder]: 50/108 cut-off events. [2023-08-30 01:16:55,976 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-08-30 01:16:55,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 108 events. 50/108 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 270 event pairs, 3 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 578. Up to 32 conditions per place. [2023-08-30 01:16:55,977 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 23 selfloop transitions, 11 changer transitions 19/53 dead transitions. [2023-08-30 01:16:55,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 53 transitions, 533 flow [2023-08-30 01:16:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 01:16:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 01:16:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 796 transitions. [2023-08-30 01:16:55,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40883410374935797 [2023-08-30 01:16:55,979 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 796 transitions. [2023-08-30 01:16:55,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 796 transitions. [2023-08-30 01:16:55,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:55,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 796 transitions. [2023-08-30 01:16:55,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.36363636363636) internal successors, (796), 11 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:55,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:55,983 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 177.0) internal successors, (2124), 12 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:55,983 INFO L175 Difference]: Start difference. First operand has 83 places, 39 transitions, 361 flow. Second operand 11 states and 796 transitions. [2023-08-30 01:16:55,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 53 transitions, 533 flow [2023-08-30 01:16:55,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 53 transitions, 502 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 01:16:55,987 INFO L231 Difference]: Finished difference. Result has 83 places, 28 transitions, 256 flow [2023-08-30 01:16:55,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=256, PETRI_PLACES=83, PETRI_TRANSITIONS=28} [2023-08-30 01:16:55,987 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-08-30 01:16:55,987 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 28 transitions, 256 flow [2023-08-30 01:16:55,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:55,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:16:55,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:16:56,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:56,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 01:16:56,200 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:16:56,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:16:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1282005238, now seen corresponding path program 9 times [2023-08-30 01:16:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:16:56,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623979932] [2023-08-30 01:16:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:16:56,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:16:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:16:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:16:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623979932] [2023-08-30 01:16:56,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623979932] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 01:16:56,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197621090] [2023-08-30 01:16:56,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 01:16:56,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:56,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:16:56,321 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 01:16:56,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 01:16:56,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 01:16:56,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:16:56,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 01:16:56,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:16:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:56,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:16:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:16:56,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197621090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:16:56,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 01:16:56,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 01:16:56,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709570256] [2023-08-30 01:16:56,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 01:16:56,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 01:16:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:16:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 01:16:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-30 01:16:56,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 177 [2023-08-30 01:16:56,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 28 transitions, 256 flow. Second operand has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:56,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:16:56,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 177 [2023-08-30 01:16:56,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:16:57,014 INFO L130 PetriNetUnfolder]: 32/70 cut-off events. [2023-08-30 01:16:57,014 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2023-08-30 01:16:57,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 70 events. 32/70 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 375. Up to 23 conditions per place. [2023-08-30 01:16:57,015 INFO L137 encePairwiseOnDemand]: 169/177 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 01:16:57,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 34 transitions, 344 flow [2023-08-30 01:16:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 01:16:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 01:16:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2023-08-30 01:16:57,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067796610169492 [2023-08-30 01:16:57,016 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 648 transitions. [2023-08-30 01:16:57,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 648 transitions. [2023-08-30 01:16:57,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:16:57,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 648 transitions. [2023-08-30 01:16:57,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:57,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:57,020 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:57,020 INFO L175 Difference]: Start difference. First operand has 83 places, 28 transitions, 256 flow. Second operand 9 states and 648 transitions. [2023-08-30 01:16:57,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 34 transitions, 344 flow [2023-08-30 01:16:57,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 34 transitions, 291 flow, removed 3 selfloop flow, removed 14 redundant places. [2023-08-30 01:16:57,022 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2023-08-30 01:16:57,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2023-08-30 01:16:57,022 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2023-08-30 01:16:57,022 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2023-08-30 01:16:57,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.44444444444444) internal successors, (1268), 18 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:16:57,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 01:16:57,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 01:16:57,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 01:16:57,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 01:16:57,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 01:16:57,232 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 5, 5, 1, 1, 1, 1, 1] [2023-08-30 01:16:57,234 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 01:16:57,234 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 01:16:57,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:16:57 BasicIcfg [2023-08-30 01:16:57,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 01:16:57,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 01:16:57,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 01:16:57,238 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 01:16:57,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:16:37" (3/4) ... [2023-08-30 01:16:57,240 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 01:16:57,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 01:16:57,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 01:16:57,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 01:16:57,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 01:16:57,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 01:16:57,252 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 01:16:57,282 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 01:16:57,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 01:16:57,283 INFO L158 Benchmark]: Toolchain (without parser) took 20400.97ms. Allocated memory was 56.6MB in the beginning and 211.8MB in the end (delta: 155.2MB). Free memory was 36.5MB in the beginning and 79.7MB in the end (delta: -43.2MB). Peak memory consumption was 111.3MB. Max. memory is 16.1GB. [2023-08-30 01:16:57,283 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 46.1MB. Free memory was 24.4MB in the beginning and 24.3MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:16:57,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.86ms. Allocated memory is still 56.6MB. Free memory was 36.3MB in the beginning and 25.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 01:16:57,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.61ms. Allocated memory is still 56.6MB. Free memory was 25.4MB in the beginning and 37.8MB in the end (delta: -12.4MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-08-30 01:16:57,284 INFO L158 Benchmark]: Boogie Preprocessor took 20.99ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 36.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:16:57,284 INFO L158 Benchmark]: RCFGBuilder took 367.87ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 23.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 01:16:57,285 INFO L158 Benchmark]: TraceAbstraction took 19682.22ms. Allocated memory was 56.6MB in the beginning and 211.8MB in the end (delta: 155.2MB). Free memory was 36.1MB in the beginning and 82.8MB in the end (delta: -46.7MB). Peak memory consumption was 107.1MB. Max. memory is 16.1GB. [2023-08-30 01:16:57,286 INFO L158 Benchmark]: Witness Printer took 45.00ms. Allocated memory is still 211.8MB. Free memory was 82.8MB in the beginning and 79.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 01:16:57,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 46.1MB. Free memory was 24.4MB in the beginning and 24.3MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.86ms. Allocated memory is still 56.6MB. Free memory was 36.3MB in the beginning and 25.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.61ms. Allocated memory is still 56.6MB. Free memory was 25.4MB in the beginning and 37.8MB in the end (delta: -12.4MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.99ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 36.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 367.87ms. Allocated memory is still 56.6MB. Free memory was 36.5MB in the beginning and 23.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19682.22ms. Allocated memory was 56.6MB in the beginning and 211.8MB in the end (delta: 155.2MB). Free memory was 36.1MB in the beginning and 82.8MB in the end (delta: -46.7MB). Peak memory consumption was 107.1MB. Max. memory is 16.1GB. * Witness Printer took 45.00ms. Allocated memory is still 211.8MB. Free memory was 82.8MB in the beginning and 79.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 88 PlacesBefore, 29 PlacesAfterwards, 87 TransitionsBefore, 24 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 84 TotalNumberOfCompositions, 815 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 744, independent: 730, independent conditional: 0, independent unconditional: 730, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 385, independent: 383, independent conditional: 0, independent unconditional: 383, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 744, independent: 347, independent conditional: 0, independent unconditional: 347, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 385, unknown conditional: 0, unknown unconditional: 385] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 79]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.5s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2506 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2061 mSDsluCounter, 1584 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1545 mSDsCounter, 335 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8741 IncrementalHoareTripleChecker+Invalid, 9076 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 335 mSolverCounterUnsat, 39 mSDtfsCounter, 8741 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 239 SyntacticMatches, 29 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=848occurred in iteration=19, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 533 NumberOfCodeBlocks, 533 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 4102 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1457 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 52 InterpolantComputations, 21 PerfectInterpolantSequences, 11/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 01:16:57,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE